Tìm x
----- Nội dung ảnh -----
```
1) 1 - 2(x - 3) = 5
2) 5 - (1 - 3) = 4
3) 1 - 2(3 - x) = 5
4) 2(x - 3) = 3
5) 5 - 1 = 4
6) (x + 1) : 3 = 1
7) 1 - 3(x - 2) = 7
8) 1 - 2(x + 3) = -3
9) 4 - 2(2x + 1) = 6
10) 0,2 + 2 = 1/3
11) -1,5 + 15/2 = 3/4
12) 2(1/4 - 1) = 20
13) 2x(x - 1) = 5/4
14) 8 : 7 - 1/2(x - 2) = -1
15) 5 - (1/2 - 2) = 1/2
16) 4(x + 1) - 2(x + 1/3) = 0
17) 5(x + 3) - 3(2x + 1) = 0
18) 2(x - 3) = 0
19) 5(1 - 2x) = 0
20) 3/4 - (1/2 - 2) = -1/3
```
(Note: Text is included as a reconstruction from mathematical content in the provided image format.)
```
1) 1 - 2(x - 3) = 5
2) 5 - (1 - 3) = 4
3) 1 - 2(3 - x) = 5
4) 2(x - 3) = 3
5) 5 - 1 = 4
6) (x + 1) : 3 = 1
7) 1 - 3(x - 2) = 7
8) 1 - 2(x + 3) = -3
9) 4 - 2(2x + 1) = 6
10) 0,2 + 2 = 1/3
11) -1,5 + 15/2 = 3/4
12) 2(1/4 - 1) = 20
13) 2x(x - 1) = 5/4
14) 8 : 7 - 1/2(x - 2) = -1
15) 5 - (1/2 - 2) = 1/2
16) 4(x + 1) - 2(x + 1/3) = 0
17) 5(x + 3) - 3(2x + 1) = 0
18) 2(x - 3) = 0
19) 5(1 - 2x) = 0
20) 3/4 - (1/2 - 2) = -1/3
```
(Note: Text is included as a reconstruction from mathematical content in the provided image format.)